The often overlooked [in some quarters] tasteful guitar solo - I'll start with Andy Latimer from Camel who has been very ill for a few years. The good news is he's back with a new album in the pipeline and a tour with Camel.
Fast forward to around 3.00 mins if you want to avoid the keyboard solo.
Chord change si another great track.
Remember, it's easier to criticise than create!